To provide a divided pulley allowing easy execution of belt attachment and detachment work even in a narrow space, and allowing execution of the belt attachment and detachment work without damaging a belt.

The divided type pulley 10 is equipped with a cylindrical belt winding part 11, a first collar part 121 formed integrally with the belt winding part 11 on side surface of an apparatus side of the belt winding part 11 and composing a whole of an apparatus side collar part of the divided type pulley 10, a second collar part 122 formed integrally with the belt winding part 11 on a side surface in an opposite side of an apparatus of the belt winding part 11 and composing one part of a collar part in an opposite side of the apparatus of the divided type pulley 10, and a detachable part 13 which is equipped with a portion composing the whole of the collar part in an opposite side of the apparatus of the divided type pulley 10 along with the second collar part 122 and which is detachable from the belt winding part 11.